(Solved): The number of people arriving for treatment at an emergency room can be modeled by a Poisson pr ...

The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a rate parameter of six per hour. (a) What is the probability that exactly three arrivals occur during a particular hour? (Round your answer to three decimal places.) (b) What is the probability that at least three people arrive during a particular hour? (Round your answer to three decimal places.) (c) How many people do you expect to arrive during a 15-min period? people You may need to use the appropriate table in the Appendix of Tables to answer this question.